22423322440 has 16 divisors (see below), whose sum is σ = 50452475580. Its totient is φ = 8969328960.

The previous prime is 22423322431. The next prime is 22423322477. The reversal of 22423322440 is 4422332422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21445259364 + 978063076 = 146442^2 + 31274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22423322399 and 22423322408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280291491 + ... + 280291570.

Almost surely, 2^22423322440 is an apocalyptic number.

22423322440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22423322440 is an abundant number, since it is smaller than the sum of its proper divisors (28029153140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22423322440 is a wasteful number, since it uses less digits than its factorization.

22423322440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560583072 (or 560583068 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 22423322440 its reverse (4422332422), we get a palindrome (26845654862).

The spelling of 22423322440 in words is "twenty-two billion, four hundred twenty-three million, three hundred twenty-two thousand, four hundred forty".